diff --git a/content-config/src/main/java/org/xbib/content/config/SystemConfigLogger.java b/content-config/src/main/java/org/xbib/content/config/SystemConfigLogger.java
index 0d79fb3..a5afa06 100644
--- a/content-config/src/main/java/org/xbib/content/config/SystemConfigLogger.java
+++ b/content-config/src/main/java/org/xbib/content/config/SystemConfigLogger.java
@@ -4,16 +4,16 @@ public class SystemConfigLogger implements ConfigLogger {
 
     @Override
     public void info(String string) {
-        System.out.println("info: " + string);
+        System.err.println("info: " + string);
     }
 
     @Override
     public void warn(String message) {
-        System.out.println("warning: " + message);
+        System.err.println("warning: " + message);
     }
 
     @Override
     public void error(String message) {
-        System.out.println("error: " + message);
+        System.err.println("error: " + message);
     }
 }
diff --git a/gradle.properties b/gradle.properties
index 20b8b84..0aa288e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 group = org.xbib
 name = content
-version = 2.6.4
+version = 2.6.5
 
 gradle.wrapper.version = 6.6.1
 xbib.net.version = 2.1.0